Early Radiographic and Clinical Outcomes of Cementless Robot-Assisted Functional Alignment Total Knee Arthroplasty with Wide Boundary in Elderly Japanese Patients

Robot-assisted FA-TKA with cementless implants provided favorable early clinical and radiographic outcomes in elderly Japanese patients. Within 1 year, tibial varus up to 6° and overall limb alignment within ±6° were not associated with early tibial subsidence in varus knees, although meticulous planning and implantation remain essential, particularly in valgus knees.